A clipper storm will move across the Great Lakes through this weekend with periods of light snow, gusty winds, and lake effect snow bands which could make for hazardous travel at times. A frigid airmass will spread eastward behind this storm into the Midwest and Eastern U.S. through the weekend. Read More >
Washington CWSU
Center Weather Service Unit
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Temperature Conversion |
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| Enter a number then click on the the conversion button. | ||||
| Fahrenheit (o F) |
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| Celsius (o C) |
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Wind Speed Calculations |
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| Enter a speed into any blank to convert to all other wind speeds. | ||||||
| mph knots m/sec km/hr | ||||||
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Wind Chill Calculation |
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| Enter the temperature in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill index. | ||||||
| Temp (o F) |
Wind (mph) |
Index |
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Relative Humidity Calculation |
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| Enter the air temperature and the dew point in degrees Fahrenheit, then click on the Calculate RH to compute the relative humidity. | ||||||
| Temp (o F) |
Dew Point |
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Heat Index Calculations |
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| Enter the temperature in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), or the Dew Point (Tdp). Then click on the Calculate HI to compute the heat index (HI). | |||||||
| Temp (o F) |
RH | HI |
Tdp |
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| Temp (o F) |
Tdp | HI | RH | ||||
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Washington CWSU
Washington ARTCC Center Weather Service Unit
825 East Market Street
Leesburg, VA 20176-4496
703-771-3480
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